We present a detailed experimental and theoretical analysis of the dispersion and nonlinear
Kerr frequency shifts of plasma modes in a one-dimensional Josephson junction chain …

We study the zero-temperature phase diagram of a dissipationless and disorder-free
Josephson junction chain. Namely, we determine the critical Josephson energy below which …

We propose a scheme to implement a tunable, wide frequency-band dissipative
environment using a double chain of Josephson junctions. The two parallel chains consist of …

Superconducting nanowires underpin the development of a variety of highly advanced
quantum devices such as single‐photon detectors and quantum circuits. In 1D …

We study coherent quantum phase slips which lift the ground state degeneracy in a
Josephson junction ring, pierced by a magnetic flux of the magnitude equal to half of a flux …

We study switching current distributions in superconducting nanostrips using theoretical
models and numerical simulations. Switching current distributions are commonly measured …

A 2D metallic phononic crystal (PnC), which is fabricated by drilling periodic holes in a
suspended niobium (Nb) film, is repeatedly cooled and warmed in the temperature range of …

Previous work [1] on chains of RF SQUIDs has exposed repeatable hysteretic jumps in the
frequency modulation curve. In this thesis we show that this may be explained by a nearest …

I also wish to acknowledge Prof. Frank Hekking, who was my academic advisor from 2009 to
2012 at the LPMMC. Prof. Hekking introduced me to the topics of mesoscopic …

After doing an experiment one needs to understand the results and this is where these
superheros enter the scene, the theoreticians. I was very lucky to work with Serge Florens …